logging in or signing up similar polygons emhery Download Post to : URL : Related Presentations : Let's Connect Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 2203 Category: Education License: All Rights Reserved Like it (1) Dislike it (0) Added: January 10, 2010 This Presentation is Public Favorites: 0 Presentation Description lesson about similar polygons Comments Posting comment... Premium member Presentation Transcript SIMILAR POLYGONS : SIMILAR POLYGONS BY: MR. EMERSON R. RESPONZO FACULTY UNIVERSITY OF LA SALETTE HIGH SCHOOL DEPARTMENT MALVAR, SANTIAGO CITY S. Y. 2009-2010 OBJECTIVE: : OBJECTIVE: To identify and apply the properties of similar polygons Can you still remember the congruent object/figures? : Can you still remember the congruent object/figures? Congruent figures have the same shape and size Look at the following: : Look at the following: A B C D Similar figures have the same shape but not necessarily the same size Slide 5: Definition: Two polygons are SIMILAR – if their corresponding angles are congruent and the lengths of their corresponding sides are in proportion. Symbol ~ Slide 6: Trapezoid ABCD ~ trapezoid EFGH A B C D E F G H What are the corresponding angles? What are the corresponding sides? 8 8 12 16 12 6 6 9 Slide 7: Are the polygons similar? Yes or no? A B C 6 8 10 x D E F 9 12 15 x YES NO Slide 8: Sorry this is not the correct answer Slide 9: Congratulations! You are correct! Slide 10: Are the polygons similar? Yes or no? A B C 6 8 11 x D E F 9 12 15 x YES NO 150 150 Slide 11: Sorry this is not the correct answer Slide 12: Congratulations! You are correct! Slide 13: Name the corresponding angles. Write the proportion for the lengths of the corresponding sides. Give the scale factor, first to second. H I J K L M N O P Q 12 10 4 4 x 12 18 6 6 15 Given that they are similar: Slide 14: Lets try to answer the following: Given that the following pairs of polygons are similar give a similarity statement, the scale factor and find the missing lengths. A B D C E F H G 20 15 25 9 6 Slide 15: QUIZ Given that the following pairs of polygons are similar give a similarity statement, the scale factor and find the missing lengths. G O T M A N 40 36 27 18 TRUE OR FALSE : TRUE OR FALSE All squares are similar. All rectangles are similar. If two triangles are isosceles, then they are similar. If two polygons are regular, then they are similar. If two polygons are similar, then they are congruent. If two polygons are congruent then they are similar You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.